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 |  |  | | Jack Hamburg |  | | Residence: | Rapid City, SD |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
Baseline Tennis Center Winter Championsh, February 6, 2004
 Mercedes Benz Junior Open (Championship), March 5, 2004
 Asfora South Dakota Open Northern Junior, June 12, 2004
 Summer Sweet 16 (by selection only) (Cha, June 18, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Eric Chien | + | 7-6(5); 6-2 | | Q | Loss | Eric Frueh | 117 | 3-1 RJ | | S-N | Loss | Scott Elsass | 249 | WJ* | | F-NW | Loss | Mya Smith-Dennis | | RJ |
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USTA National Opens - Omaha, NE, July 3, 2004
 USTA Zone Team Championships - Omaha, NE, July 28, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | RR | Win | Andrew Korinek | 87 | 6-4; 6-0 | | RR | Win | J Mulhall | 149 | 6-0; 6-2 | | RR | Win | Seth Nelson | + | 6-0; 6-0 | | RR | Loss | P.J. Guignon | | 6-4; 6-0 |
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NAC Boys Fall Classic (12,16) Championsh, September 17, 2004
 GUSTAvus Fall Classic (Boys 14,18) (Cham, October 15, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Evan Johnson | | 6-1; 6-1 | | 16 | Loss | Amrik Donkena | | 7-6(3); 7-5 | | 3 | Win | Steven Pjevach | | 6-1; 6-1 | | QQ | Win | Eric Chien | + | 6-2; 6-1 | | CQ | Loss | Hamish Weerasinghe | 50 | 6-1; 6-2 |
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GUSTAvus Fall Classic (Boys 12,16) (Cham, October 22, 2004
 USTA National Winter Championships, December 27, 2004
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
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